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ATRC Podcast Notes

Podcast for September 22, 2006 - Episode 33

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Play time 64 minutes  - Program Notes

 

"Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.  ~George Orwell

George Orwell

We have a lot of technology and download news to report this week: a new version of Acrobat, iTunes bugs, a Toshiba battery recall, a new, cured, wikipedia called Citizendium, vector graphic malware, and Microsoft Soapbox.  David is on hiatus this week, vacationing in Colorado.  Haydn's Teaching with Technology segment is titled "Is Online Teaching for Me?"  My tech-talk-topic will be "Using Audio in PowerPoint."  The gizmo this week has to do with a distinctly Orwellian development in good old England.

Palomar Tech and Download News

  • A new version of Adobe Acrobat, version 8, was announced this week.  The emphasis is on collaboration and data collection into PDF documents, and works with a yet unrevealed product (coming soon) called Acrobat Connect (price and delivery date unannounced).  The street price on Acrobat 8 pro is $449.  A series of video and audio presentations about the new product can be found here.  A CNet article on the web conferencing aspects of the new Acrobat is here.
     
  • The Flash player 9 is also now available for download, along with developer tools called The Flash Player Detection Kit.
     
  • Adobe has a new web site called PodTech.network which presents all the latest from Adobe in either a video or audio segment with subscription opportunities to some, but not all, of the features.
     
  • Bug reports in the new Apple iTunes 7 are much exaggerated.  The knee jerk response of Apple haters is to rush to press with supposed bugs, but they are few, as far as we can tell.  Some people report podcasts which cause the iPod to reboot, but they seem to be very obscure.  The only bug I have personally observed is a miscalculation (skip) in the gapless playback on one of the tracks on Abbey Road--that's pretty specific, and hey, it's still better than the gap that was there before.  Oh yeah, and it is significantly slower to respond than iTunes 6, and 6 was no speed demon, but hey, that's just software.  The following have published accounts of bugs:
  • We reported just last week that iTunes began selling downloadable movies from Disney.  So, how did they do?  In the first week, they sold over 125,000 movie downloads.  New ones went for $14.99, library movies for 9.99.
     
  • Despite early denials, Toshiba has joined Dell and Apple in a massive battery recall.  For specific information and to find out if your batteries may be affected, use one of the following resources:

    Panasonic also recalled 6000 laptops with Sony batteries, but for a defect unrelated to the battery failure issues experienced with the companies above.  The Panasonic batteries were on laptops sold only in Japan in April and May of 2005.

    Can HP and Lenovo be far behind?
     

  • Larry Sanger, founder of Wikipedia (his wiki article), has announced the creation of a new, reformed wikipedia called the Citizendium Click here to read the short version of the announcement, along with its succinct criticisms of the current wikipedia model (inconsistent enforcement of rules, the anonymous troublemaker problem, insular leadership, exclusion of many academics) and the plan to create the new, reformed model.
     

  • We were not successful in delivering the tech news without mentioning Microsoft, alas.  It was announced yesterday by Sunbelt Software that a flaw in the way Internet Explorer handles vector graphics allows malicious web sites to take control of the computer and install whatever.  This has actually happened, and the whatever was so much spyware that the computer became unusable.  This was reported by the BBC under the headline "Browser flaw seen on porn sites," suggesting that these are the sorts of sites that load the malware.  Microsoft has said (Security Bulletin 925568) a fix will be released with their October second Tuesday security update (Oct. 10), or "...earlier if the situation warrants it."  Most interestingly, the security bulletin referenced above said, "If you are a Windows Live OneCare user and your current status is green, you are already protected from known malware that uses this vulnerability to attempt to attack systems."  So...if you are a Microsoft antivirus customer, you're OK, if not, you'll have to take your chances until October 10.  Wow.
     

  • Ok, and speaking of Microsoft, they announced this week they are launching a YouTube/Google/Yahoo/MySpace do-it-yourself video upload site called Soapbox.
             
               

The operation is in Beta now, by invitation, and the invitation list is full.  If you want to be informed when there are openings, leave your email here.  Think they're just a little late?

Training Opportunities

 

Blackboard Feature of the Week - David Gray

Dave is on vacation this week and will not have a segment.

See the index of Dave's previous "Blackboard Feature of the Week" segments.

Note:  To get to David's vodcast site, click here.

Teaching with Technology - Dr. Haydn Davis

Haydn's topic is "Is Online Teaching for Me?"  He takes on three general topics:

  1. Is Online Teaching For Me?
  2. Teaching Online – How Much Time Does It Take?
  3. What is one (almost) sure-fire way to improve faculty satisfaction with teaching online?

Resources:

Podcast Notes for September 22 [PDF - 22K]

Listen to this segment only [mp3 - play time = 17:43]

See an index of previous "Teaching with Technology" segments.

Tech-Talk-Topic - Terry Gray

PowerPoint Audio Questions

I have received a number of questions lately related to playing audio in PowerPoint, and would like to address them here.

How to play a sound file for several (or all) slides

A frequent question I get is: How do I make a sound file play all the way through my presentation?  Generally this one has to do with adding background music to a presentation.

Of course, you can use a CD and tell PowerPoint to loop the track continuously, as this demonstration from Microsoft explains, but we do not recommend using a CD for several reasons:

  • You have to remember to bring the CD with you to the presentation;
  • The computer you use for the presentation may be a strange one, and it may not have a CD drive, or it may be a laptop with the extra battery mounted in the CD drive slot;
  • CDs are easily scratched and may skip during the presentation.

A better solution is to insert a sound file using the Insert > Movies and Sounds > Sound from File... option.  Set it to play Automatically.  (You will be given this choice when you insert it).

A speaker icon will appear centered on your slide.  Right-click it, choose "Edit Sound Object," and set it to "Loop until stopped."

(Note that you can set the Sound volume (relative to other sounds in the presentation) and Hide the speaker icon here too--(the speaker icon will hide during presentation, but not in Normal View in edit mode).  Click OK.

Now, right-click the speaker icon again and this time choose "Custom Animation."  The Custom Animation task pane will open.  If you have other animations on this slide, you will see your sound animation below them.  If you want the sound to play as soon as the slide displays, move it to the top of the list by dragging it.  Click the drop-down on the animation indicator and choose "Effect Options..." 

On the Play Sound dialog that appears, in the "Stop playing" area, select the "After:" radio button and enter "999" in the slides box.  Click OK.

That's it.  You have set the sound file to loop continuously AND to play until after the last possible slide (assuming you have less than 999 slides).

How do I get a sound file off a CD?

Rip the CD using the Windows media player or iTunes.  Before you rip with iTunes, set the file type to mp3, rather than the default AAC format iTunes will want to use.  Windows media player will rip in wma format, which will work fine in PowerPoint.  If you want, however, you can set the Windows media player to rip in mp3 format too.  I recommend wma for PowerPoint.

Once you have ripped the file, simply copy it from your music library (usually the My Music folder if you are using Windows media player) or whatever library location you have set for your iTunes music.  Copy it to the SAME folder in which you are creating (or are about to create) your PowerPoint presentation.  For reasons of portability (explained below) do not use the original file from its original location.

Insert the sound file as described above.

What if I have the sound file as a wav file?  Do I need to convert it to mp3 or wma format?

No.  Wav format files will work fine, but they will be MUCH larger than a compressed format, such as mp3 or wma.  We recommend converting the file.  There are several ways to convert wav to mp3 files, but the easiest (and safest and cheapest) is to use Audacity, a free open source program.  Load the wav file and export it as mp3.  The easiest way to create a wma file from a wav original is to us the free Windows media encoder to convert it.

What other sound file formats are supported by PowerPoint?

AIFF, AIF, AIFC (audio interchange format)

AU, SND (Unix sound files)

MP3 and M3U (mpedg-1 audio layer 3 files)

MID, MIDI (musical instrument digital interface - the only non-waveform files supported by PowerPoint).

Will the sound file be embedded in my PowerPoint presentation when I save it?

Only if it is a wav file and only if it is smaller than the PowerPoint default-to-embed limit, which is set in Tools > Options on the General tab:

To save larger wav files embedded, rather than linked, set the 100 Kb default to a much higher number.

When I play my PowerPoint on my desk computer all the sound files play fine.  When I take it to the classroom on a CD, and play it on the classroom computer, only some of the sound files play, not all.  What is going on?

See the item above.  If a sound file is not a wav file, or if it is a wav file larger than your "Link sounds with file size greater than" limit, it will not be embedded in your PPT or PPS file.  It will be linked, meaning that PowerPoint will save a path to it where it can find it and play it.

If some sounds play and others do not, it is because the ones that play were small and therefore embedded in the PPT file, the others are back on your hard drive and PowerPoint can't get to them from the classroom.

Remember, non-wav files will never be embedded in the PPT file.

To solve this problem, assemble all your audio files in the SAME folder where you create your presentation and link to them from there, as you create your presentation.  Then, when you copy your presentation to CD or flash drive to take it to the classroom, copy the entire folder containing the presentation and all its sound files.  The path PowerPoint uses to the files will be relative to the same folder as the presentation and it will always find and play them.

If you have created a presentation with these widely dispersed audio links, you will have to recreate it with the links to the files in the same folder.  There is no easy way to fix this.  PowerPoint won't let you adjust the link internally.

When I record an audio in PowerPoint using the record or narration tool, what kind of sound files are created?

Wav files.  These will be much larger than they need to be.  Rather than using the recorder tool in PowerPoint (Insert > Movies and Sounds > Record Sound), we recommend recording using an external device, such as the WS-100 digital audio recorder that can be checked out from Academic Technology, or a microphone hooked directly to your computer's sound card and using the Windows media encoder to make the recording.  The result will be a wma file that you can then insert following the technique described above.

If you want a narrated PowerPoint presentation, especially for presentation on the web, we recommend using Microsoft Producer, rather than the narration tool built-in to PowerPoint.  The narration tool creates large, ungainly wav files that load very slowly if placed on the web, or even when presented in person or kiosk mode.  Producer creates small, wma format files that load and play much more quickly.

Resources:

Listen to this segment only [mp3 - play time = 14:34]

Gizmo of the week / Campaign 06

Big Brother is Shouting.  "Attention Citizens!  All citizens should be off the streets for the midnight curfew."  You may hear this soon from an intersection near you.  It was not by accident the author of 1984 was an Englishman and the Oceania of 1984 is unmistakably English.  The UK has now begun adding audio capabilities to "... the more than 4 million1 video surveillance cameras blanketing The Kingdom, seven of the 158 CCTV cams in the Northern town of Middlesbrough have been fitted with loudspeakers. Do something "anti-social" and prepare for an earful of reprimand from the camera operators."  When warned by the voices: "'Most people are so ashamed and embarrassed at being caught they quickly slink off without further trouble," according to the article in the Daily News.  When asked about issues of civil liberty, the police respond with "'Put it this way, we never have requests to remove them." 

Granted, all-pervasive surveillance like this may make it easier to capture terrorists, as in the recent UK bust of the would-be airline bombers (though whether the cameras played a role or not is clear), but at some point this sort of invasion of personal privacy must be considered excessive--and one camera per four households is far beyond that point.

Citing the civil cowardice of the herd of ordinary citizens is never a justification for employment of an invasive, controlling technology in overturning the rights to privacy of the individual.  If we think the fourth amendment would protect us from this in the US, think again.  Our rights under the fourth amendment have been eroding steadily for the last several decades until they are no better than theoretical at present. 

It seems that Europeans are easily herded and can be intimidated by technology like this.  How else could a handful of communists have kept captive most of the tens of millions in the eastern block for so many decades?  In the US, the main thing we have going for us is not our constitution, but our tradition of individual privacy, rowdy-ism, and civil disobedience.  The very thing the cameras and loud speakers are intended to curb. 

One comment on the Daily News site was "I don't think this would work in Atlanta. Nobody cares. They would steal the cameras."  I hope so, but they look kind of hard to steal. It would be better to shoot them out or paint their lenses black.  And while we're at it, hack the system and berate the observers for good measure.

When governments start making statements like 'the only way to maintain peace is through war' (sound anything like the justification for the war on terror? = war is peace); or 'individual freedom is too dangerous to the freedom of the group,' ( = freedom is slavery) or 'it is only through the unquestioning pursuit of anti-democratic practices that democracy can prevail' (= ignorance is strength) that they have bought the government's doublespeak and assume you have bought it too.  Internal surveillance, of course, is the prolog to subservience.

Now, about those IR ports on your TV sets, and, oh yeah, what about the precogs?...

1 Note:  According to slashdot, "In January 2004 there were more than 4,285,000 CCTV cameras in the UK (roughly 1 for every 4 households). No data about the number of CCTV cameras now in use in the UK is available."

(Source:  The Daily Mail  and Engadget)

Music

The music for today's show was provided by Magnatune.com, and is used through their Creative Commons license for podcasts.  Today's album was "Mutandina" by Mutandina, a band described as "Funk Jazz Slasa Rock from Agentina."

From the band promo site: "Mutandina means mixing, "mestizaje". Mutandina mixes styles to create a musical result that is different and personal, where influences as jazz, salsa, funk, rock, pop, Brazilian and Latin American music can be found."  Hard to miss with a combo like that.

We used tracks 7: "La Casita Del Amor;" 1: "Juego;" 10: "Llevala;" 6: "Dicen;" 12: "Yendote a Buscar;" 5: "Eso;" 13: "Jaus of Love."

Visit magnatune and reward them for their generosity, and if you like this album, buy it.  Magnatune is not evil!

"I like long walks, especially when they are taken by people who annoy me."  ~ Noel Coward

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